Hogback South, MNA Locality A: Late/Upper Campanian, New Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia - Temnospondyli
Scotiophryne pustulosa Estes 1969
1 specimen
fragmentary posterior portion of left maxilla
Amphibia - Temnospondyli - Batrachosauroididae
Prodesmodon ? copei Estes 1964
1 specimen
fragmentary ?cervical vertebra
Reptilia
Paronychodon lacustris Cope 1876
Armstrong-Ziegler 1980
nomen dubium belonging to Paronychodon
isolated teeth
Reptilia - Dromaeosauridae
? Dromaeosauridae indet. Colbert and Russell 1969
isolated teeth
Reptilia - Coeluridae
? Coeluridae indet. Marsh 1881
isolated teeth
Reptilia
Deinodon horridus Leidy 1856
3 specimens
nomen dubium belonging to Tyrannosauroidea
isolated teeth
Reptilia - Crocodylia
Leidyosuchus sp. Lambe 1907
isolated teeth
    = Crocodylia indet. Owen 1842
Alroy 2007
Reptilia
Brachychampsa sp. Gilmore 1911
isolated teeth
? Thoracosaurus sp. Leidy 1852
isolated teeth
Coniophis cosgriffi n. sp. Armstrong-Ziegler 1978
    = Serpentes indet. Linnaeus 1758
Woolley et al. 2020
Reptilia - Chamopsiidae
Chamops segnis Marsh 1892
1 specimen
fragment of dentary (MNA Pl. 1613)
    = Teiidae indet. Gray 1827
Gao and Fox 1996
MNA Pl. 1613
    = Chamopsiidae indet. Denton and O'Neill 1995
Woolley et al. 2020
Reptilia - Testudines
Cryptodira indet. Cope 1868
Database 2005 1 specimen
Reptilia - Testudines - Trionychidae
plastron and carapace fragments
    = Trionychidae indet. Gray 1825
Alroy 2006
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
isolated carapace and plastron fragments
Reptilia - Testudines - Nanhsiungchelyidae
? Basilemys sp. Hay 1902
shell fragments
Reptilia
Compsemys sp. Leidy 1856
1 specimen
carapace fragment
    = Compsemys victa Leidy 1856
Joyce and Anquetin 2019
Acipenseriformes - Acipenseridae
Acipenser eruciferus (Cope 1876)
Actinopteri - Elopiformes - Phyllodontidae
Paralbula casei Estes 1969
Actinopteri - Amiiformes - Amiidae
Amia fragosa Jordan 1927
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
original and current combination Lepidotus occidentalis
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
Bivalvia - Pholadida - Pholadidae
Teredina neomexicana
Armstrong-Ziegler 1980
see common names

Geography
Country:United States State/province:New Mexico County:San Juan
Coordinates: 36.5° North, 108.5° West (view map)
Paleocoordinates:43.8° North, 79.8° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Late/Upper Campanian
Age range of interval:83.60000 - 72.10000 m.y. ago
Stratigraphy
Formation:Fruitland
Stratigraphic resolution:group of beds
Stratigraphy comments: within the upper 15.2 m of the Fruitland
Lithology and environment
Primary lithology: silty mudstone
Secondary lithology:lenticular calcareous sandstone
Includes fossils?Y
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils,mesofossils
Disassociated major elements:many
Disassociated minor elements:many
Collection methods and comments
Collection excludes:some microfossils
Collection methods:bulk,anthill,chemical,sieve,field collection
Minimum sieve size:1.000 Maximum sieve size:1.600
Reason for describing collection:taxonomic analysis
Museum repositories:UCMP
Collection method comments: MNA locality #16, used tandem screen boxes, with 1/16 inch mesh size and 1/25 inch mesh. Some samples were disaggregated using Amine 220 and Methyl Amyl Alcohol.
Taxonomic list comments:JA: mammals listed by Armstrong-Ziegler are incorporated into the Lower Hunter Wash list of Flynn 1986 (collection 14498)
Metadata
Also known as:Fruitland Formation vertebrates, UCMP V-72090, MNA #16, HW#24
Database number:36449
Authorizer:J. Alroy, M. Carrano, P. Mannion, R. Benson, E. Vlachos Enterer:E. Leckey, R. Benson, P. Mannion, M. Carrano, J. Alroy, E. Vlachos
Modifier:M. Carrano Research group:marine invertebrate,vertebrate
Collections that are a subset of this one:36541, 36542, 36543
Created:2004-01-29 16:46:33 Last modified:2012-03-06 09:39:45
Access level:the public Released:2004-01-29 16:46:33
Creative Commons license:CC BY
Reference information

Primary reference:
9765. J. G. Armstrong-Ziegler. 1978. An aniliid snake and associated vertebrates from the Campanian of New Mexico. Journal of Paleontology 52(2):480-483 [J. Alroy/E. Leckey/E. Leckey]

Secondary references:

18120 J. Alroy. 2006. Synonymies and reidentifications of North American fossil vertebrates. [J. Alroy/J. Alroy/J. Alroy]
19636 J. Alroy. 2007. Synonymies and reidentifications of North American fossil vertebrates and so forth. [J. Alroy/J. Alroy]
9776 J. G. Armstrong-Ziegler. 1980. Amphibia and Reptilia from the Campanian of New Mexico. Fieldiana 4:1-39 [J. Alroy/E. Leckey/E. Leckey]
13103 U.C.M.P. Database. 2005. UCMP collections database. University of California Museum of Paleontology [M. Carrano/M. Carrano/M. Carrano]
37933 K. -Q. Gao and R. C. Fox. 1996. Taxonomy and evolution of Late Cretaceous lizards (Reptilia: Squamata) from western Canada. Bulletin of the Carnegie Museum of natural History 33:1-107 [R. Benson/R. Benson]
69447 W. G. Joyce and J. Anquetin. 2019. A review of the fossil record of non-baenid turtles of the clade Paracryptodira. Bulletin of the Peabody Museum of Natural History 60(2):129-155 [E. Vlachos/E. Vlachos/E. Vlachos]
72177 C. H. Woolley, N. D. Smith, and J. J. W. Sertich. 2020. New fossil lizard specimens from a poorly-known squamate assemblage in the Upper Cretaceous (Campanian) San Juan Basin, New Mexico, USA. PeerJ 8:e8846:1-30 [P. Mannion/P. Mannion]